$settings

[gibrie]

Project: cartesian line-up of two Y-axis/2NEMA - one X-axis/1NEMA - Z=servo S90 - Arduino Uno + CNC shield V3 - NC limit switches on X + Y - limit switch Z by jumper on SpnEn/GND - machine size X=70cm/Y=100cm - drawing area X=60cm/Y=70cm.
Download GRBL-Plotter + XLoader perfect. Baud 115200.

Problem: alarm immediately after connecting - jogging not possible, no reaction for servo pen up/pen down. Homing works uncomplete and limit switches don't react even manually. As I am an Anfänger need some help. I think the problem is the $settings.

[svenhb]

alarm immediately after connecting

this normal behavior, when first use.
The button "Kill Alarm" should blink - just press.

[gibrie]

Alarm erased, still homing continues against limit switch without stoppping and only Y-axis, perhaps in config.h selected in such order?

[gibrie]

Do you see any abnormal settings in my configuration?

[svenhb]

With cartesian line up you mean regular X and Y axis?
Perhaps end-switches mixed up, or wrong type (normaly open / normaly closed)?
You can watch the marked area to check if switches are working

[gibrie]

Pn: mentions XYZ
Changed end stops X+Y to NC as I get an alarm not putting a jumper on SpnEn/GND for Z end stop

[svenhb]

Do you see any abnormal settings in my configuration?

You set $5 invert all limit switches...
https://github.com/gnea/grbl/wiki/Set-up-the-Homing-Cycle

[gibrie]

Yes as I thought the default line-up works with NO switches

[svenhb]

If you have no Z, You need to change your config.h and compile grbl again.
Regular order is Z,X,Y for homing

[gibrie]

So I remove the jumper? Will give it a try...

[svenhb]

So I remove the jumper? Will give it a try...

this is not enough. grbl triggers and untriggers each switch during homing.

[svenhb]

From the config.h:

// Define the homing cycle patterns with bitmasks. The homing cycle first performs a search mode
// to quickly engage the limit switches, followed by a slower locate mode, and finished by a short
// pull-off motion to disengage the limit switches. The following HOMING_CYCLE_x defines are executed
// in order starting with suffix 0 and completes the homing routine for the specified-axes only. If
// an axis is omitted from the defines, it will not home, nor will the system update its position.
// Meaning that this allows for users with non-standard cartesian machines, such as a lathe (x then z,
// with no y), to configure the homing cycle behavior to their needs.
// NOTE: The homing cycle is designed to allow sharing of limit pins, if the axes are not in the same
// cycle, but this requires some pin settings changes in cpu_map.h file. For example, the default homing
// cycle can share the Z limit pin with either X or Y limit pins, since they are on different cycles.
// By sharing a pin, this frees up a precious IO pin for other purposes. In theory, all axes limit pins
// may be reduced to one pin, if all axes are homed with seperate cycles, or vice versa, all three axes
// on separate pin, but homed in one cycle. Also, it should be noted that the function of hard limits
// will not be affected by pin sharing.
// NOTE: Defaults are set for a traditional 3-axis CNC machine. Z-axis first to clear, followed by X & Y.
#define HOMING_CYCLE_0 (1<<Z_AXIS)                // REQUIRED: First move Z to clear workspace.
#define HOMING_CYCLE_1 ((1<<X_AXIS)|(1<<Y_AXIS))  // OPTIONAL: Then move X,Y at the same time.
// #define HOMING_CYCLE_2                         // OPTIONAL: Uncomment and add axes mask to enable

[gibrie]

As I have no Z I do comment in config.h "#define HOMING_CYCLE_0 ((1>>X_AXIS)|(1>>Y_AXIS)) // NOT COMPATIBLE WITH COREXY and uncomment the previous setting with the Z-axis

[gibrie]

Sorry, reacted too fast and missed last message. That is the original setting still with a Z-axis no?

[svenhb]

I posted the original config.h from here: https://github.com/gnea/grbl/blob/master/grbl/config.h with Z enabled.
You need to change like this, I assume (2nd line changed to CYCLE_0):

//#define HOMING_CYCLE_0 (1<<Z_AXIS) // REQUIRED: First move Z to clear workspace.
#define HOMING_CYCLE_0 ((1<<X_AXIS)|(1<<Y_AXIS)) // OPTIONAL: Then move X,Y at the same time.